4. TROUBLE SHOOTING
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4.11 Audio trouble
4.11.1 Speaker troubleshooting
Speaker control signals are generated by OMAP4430 (U501) and Power is supplied byTWL6040(U803).
Is speaker sound OK?
TP1,TP2
END
Yes
No
Change the mainboard
Change the main ANT module.
Is speaker sound OK?
END
Yes
No
Change the RF key PCB.
Is speaker sound OK?
END
Yes
No
Change the TWL6040(U803)
Is speaker sound OK?
TP3,TP4
END
Yes
No
START
Check the speaker sound and
reconnect the main ANT module